Kolobrzeg is a city in Middle Pomerania in north-western Poland with some 50,000 inhabitants. Ko obrzeg is located on the Pars ta River on the south coast of the Baltic Sea. It has been the capital of Ko obrzeg County in West Pomeranian Voivodship since 1999, and previously was in Koszalin Voivodship. The name of the town was first mentioned by Thietmar of Merseburg as Salsa Cholbergiensis. It was re-founded during the High Middle Ages, taking its position as the regional center from a nearby Slavic Pomeranian stronghold at the site of modern Budzistowo. As a Hanseatic town chartered with Lübeck law, the town, known as Colberg, later spelling Kolberg, was the urban center of the secular reign of the Cammin bishops and their residence throughout the High and Late Middle Ages. When Kolberg was part of Brandenburgian Pomerania during the Early Modern Age, it withstood Napoleon's troops in the Siege of Kolberg. From 1815, it was part of the Prussian province of Pomerania. In 1945 thetown became Polish and the remaining German population which did not flee the advancing Red Army was later expelled.